159141997 has 4 divisors (see below), whose sum is σ = 181876576. Its totient is φ = 136407420.

The previous prime is 159141989. The next prime is 159142013. The reversal of 159141997 is 799141951.

159141997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799141951 = 29 ⋅27556619.

It is a cyclic number.

It is not a de Polignac number, because 159141997 - 2³ = 159141989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159141907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11367279 + ... + 11367292.

It is an arithmetic number, because the mean of its divisors is an integer number (45469144).

Almost surely, 2^159141997 is an apocalyptic number.

It is an amenable number.

159141997 is a deficient number, since it is larger than the sum of its proper divisors (22734579).

159141997 is an equidigital number, since it uses as much as digits as its factorization.

159141997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22734578.

The product of its digits is 102060, while the sum is 46.

The square root of 159141997 is about 12615.1495036722. The cubic root of 159141997 is about 541.9113758320.

Subtracting from 159141997 its sum of digits (46), we obtain a palindrome (159141951).

The spelling of 159141997 in words is "one hundred fifty-nine million, one hundred forty-one thousand, nine hundred ninety-seven".